failure.assertHasCause("Cannot convert string value 'unsupportedValue' to an enum value of type 'SampleTask\$TestEnum' (valid case insensitive values: OPT_1, OPT_2, OPT_3)")
    }

    def "decent error for invalid enum list value"() {
        given:
        buildFile << """
            task someTask(type: SampleTask)

            ${taskWithSingleOption('List<TestEnum>')}
        """

        when:

    }

    @SuppressWarnings("GrDeprecatedAPIUsage")
    static class SimpleTask extends DefaultTask {
        @Input
        String inputString
        @InputFile
        File inputFile
        @InputDirectory
        File inputDirectory
        @InputFiles
        File inputFiles